Metal wear member



' March 30,1926.- v

e. w. -WHITEMAN ET AL llajmn WEAR mmnsvm Filed March a, 1924 I fioryewmzemar dmRm'elLClBxJon,'

} considerable loss has been incurred owing to Patented Mar. 30, 1926.

1,578,788 PATEN OFFI E.

GEORGE w. WH ITEMAN'AND RUSSELL 'o. PAXsoN, or PHILADELPHIA, PENNSYLVA IA.

METALWEAR MEMBER.

Application filed March 8, 1924. Serial No. 697,912.

T 0 (J2 whom it may concern."

Be it known that we, GEORGE W. VI-HYDE; MAN and RUSSELL C. PAXsoN, citizens of the United States, and residents of Philadelphia, Pennsylvania, have inventedcertain new and useful Improvements in Metal ear Membersyof which the following a specification. I 1 r Our invention relates to the metal'castings, usually ofmanganese or similar wear-1 resisting metal, or metal alloy, which are as sociated with rails of usual type and are ems ployed as wear members and supports in frogs, switch parts, crossings, and the like,

i for taking excessive wear of the car wheels and sustaining the rails in rigid relationship, and the object of our invention is to provide a construction whereby portions'of such metal castings may be readily and econon'iically preparedto exactly fit orfill the space between the head and flange of a rail or rails to'which they areconnected, and to lie in proper hearing or wedging contact with the head and flange of such rail or rails.

As is well known, castings of manganese and other wear-resisting metals or metal alloys are very difiicult to machine and the present practice is to cast them to substantially the size of the finished structure; usually slightly over-size, and then to grind the same to the proper fit. '-As may be well understood, allowance for shrinkage can never be accurately determined, particularly in view of the many types an'd shapes' of castings employed, and in the present prack titre of preparing these cast wear members,

errors inshrinlqage allowance, and errors in grinding the structure'to fit; perfect wedging [it being a requiren'icnt.

The main object of our invention is topro ride an improved constructiontor wear met :11 members or castings ofthis type, wherei'i y an. accurate wedging fit with respect to the rails or rail sections: with whichth'ey are employed and to which they are secured can be obtained'by manipulation of or-an' oper-'' ation upon the casting proper without the necessity of removing a portion ofthe metal by grinding or otherwise to secure the "desired wedging fitythereby avoiding the very considerable loss occasioned by misfit castings. In some instances this manipulation or operation maybeemployejd to cor A rect errors occurring when grinding the wear metal"numbe s?te the de ired Weds-,5

ing fit, whereby portions of the same may be brought by expansion to the desired shape and dimensions; in other instancesthe oporation may be employed'to render an'over size caststructure directly available for use without any subsequent grinding ol'flother operations of any character, designed to re vmove portions of the sain-e'to make the required fit, and in still otheriinstances under size castings may be expanded to the desired shape and dimensions.

- These and otherfeaturesotour invention are more ull described hereinafter; reference being had to the accompanying drawings, in which: n t

Figure 1, is a cross-sectional viei v,' morc or less diagrammatic;illustrating a centre frog or similar n'iember' otw'ear-resisting metal, associated with the rails between which it is placed and to which it is secured in wedging engagement; such rails being indicated by dotted lines. a Fig. 2, is a sideelevation' of sufiicient of the wear-resisting member or casting shown in Fig. 1, to illustrate the construction forn ing the subject of ourinvention.

Fig. 3 is a View illustrating a wear-resisting member of other cross sectional'contour secured to a single rail,'whioh' is indicated by dotted lines and i F'gs. 4 and 5, are diagrammatic views i].- lustrating a methodor manner of utilizing the improved construction forming the subject of ourinvention to bring wear members to the desired'shape and dimensions;

The use of wear-metal members for crossings, frogs, switch parts, an'dthe like is Very well known, and a detailed description of such practice is not thoughtto be necessary.

The wear-metal member of i'naganese or other Wear-resisting alloy indicated 'at A, in Figure 1,' isprovided with lateral portionsor'extensions 1, designed to fit between the headsi2 and base flanges 3., of the respective rails, indicated at l, and the present practice has been to provide thesewearto provide a wedging fitbetween the'head provide the desired wedging' fit; such casting being originally suflic iently over-size to permit the grinding to fit. It frequently happens, however, that these end extensions shrink unduly; precluding the possibility of grinding to fit in the first instance, and it has also occurred that in the grinding operation, more metal than necessary has been removed, with the result that the very necessary and desired wedging fit between the heads and base flanges of the rails cannot be effected, and when this condition arises the casting must be discarded; incurring loss of time, labor and material.

By the use of our invention, however, we are enabled to operate directly upon the casting of manganese or other wear-resisting metal or alloy and bring it to size it undersize, or ii'cast to provide a substantial fit and slightly over-size to reduce portions of. the same to a dimension providing a perfect wedging fit between the head and flange of the rail orrails with which it is asso ciated.

To this end the casting A is grooved longitudinally oi the same as indicated at 10; the groove or grooves extending a suflicient dis tance into the body of the casting and being of such shape as to permit the portions flanking such groove or grooves to be pushed together under pressure to bring the railengaging parts, the extensions 1,]for instance, to the desired Wedging fit. On the other hand, if the portions of the extensions are under-size, they may be spread to provide the desired wedging fit by pressure applied to the walls of the groove or grooves to displace the portions flanking the same.

()ur invention broadly, comprises a construction which involves this side grooving of the casting longitudinally of the same, independently of the particular contour or cross sectional area of the groove.

In a casting such. as that indicated at A, in Fig. 1., which is interposed between a pair of rails, each of the side extensions 1, fitting between the head and base flange of such rails will be grooved, while in a section such as indicated at Fig. 3, whichis applied at one side only of a single rail, the groove will be disposed in the portion, fitting between the head and flange of. the a In Figs. 4 and 5, wev have illustrated, diagrammatically, one manner in whicheverand under-size castings may be brought to' the'desired dimension, configuratiol'i or shape and flange of a rail. I Y v In the diagram-illustrated in Figs, the full lines of the member A represent the size and, shape of the casting as takenfrom the mold, with its side grooves 10,, and, the dots parted to such side portions in order that the desired wedging fit with the head and flange of a rail may be. provided. To this end the casting may be placed between die members B and C, and'upon proper operation of the same, the side portions flanking the groove may be brought to'the conformation indicated by the dotted lines, which agreeswith the surfaces 2 and if of the wear-metal member indicated in Fig. 1. This compression will, in all probability, displace a portion of the metal inwardly with respect to the grooves 10, as indicated by the dotted lines :0.

In the diagram illustrated in Fig. 5 the casting to beoperated upon is indicated as sli 'htly under-size, and this may be brought to the normal dimension and configuration for the desired wedging 1% with the rail head and flange by applying wedging means D in engagement with the vwalls ot' the grooves; the pressure so applied displacing the metal to the configuration indicatedby the dotted lines 2 and 3 to form the upper and lower surfaces of the pordimension to provide the wedging fit between the head and the base flange of a rail. 7

As may be understood, our invention is not limited to any particular type ofcasting employed in railroad practice as a wear member and filler for crossings, frogs, switch parts and the like, but is applicable generally to these elements, and hence the particular illustration disclosed by the drawings is to be taken as illustrative of our nnprovements and not as representing the only use to which our improved construction is directed or may be applied. The member A, shown in the drawings, is indicated as substantially a solid casting, provided with the usual bolt holes a, but it will be understood thatthe castingmay be recessed or cored in any approved .or desired manner to conform with any special practice, without departing from our invention.

While we have mentioned-the use of manganese castings, it will be understood that our invention isapplicable toother types of tough or hard metal Wear members and our cla ms in their broadest aspect are to be understood as covering manganese and anyother wear member of hard or tough metal employed in railroad practice as a member 'to take and resist excessive wear. ted lines at, the side poriii ms. represent the th ir? re wafi r eetive that shaw s be Wegelaim; 1,, ts. new ertie e 9i marketers, a

llO

wear-metal member of material length having a portion arranged to fit between the head and fian 'e of a rail and dee )l rooved longitudinally of the same to permit e11 pansion or compression of such rail-engaging portion.

t. As a new article of manufacture; a wearietal member of material length having portions arranged for a wedging fit between theheads and flanges of rails; said portions being deeply grooved longitudinally of the same to permit expansion or compression of such rail-engagingportion.

5, The combination, with arail, of a metal wear member of material length'having a portion fitting betweenthe head and flange of the rail,with a deep groove.longitudinally of the same and intermediate the engaging portions in place.

surfaces of said fitting portionof'said wear member permitting expansion or. compres sion thereof to permit its engaging surfaces to accuratelyfit between the head and flange of the rail.

6. The combination, witha rail, ofa metal wear member of material length h'aving a portion disposed between 5 the" head i and flange of the 'ail with a deep "groove longitudinally' of the same and intermediate the engaging surfaces of said fitting'portion of 'said wear member permittingexpansion or compression thereof to permit said engaging surfaces to wedge between and accurately fit the head and flange of tlierail,

and means for confining said engaging The combination, with a pair of rails,

of a symmetrical metal wear member of material length having portions in wedging it between the heads and flanges of said such flange of saidrail;

rails, witli deep grooves longitudinally of the same on opposite sides and intermediate the engaging surfaces of said \vear member permitting expansion or compression there of to permit said engaging surfaces to accurately fit theheadsjand flanges of the rails, and means. for confining said Wear member in place. 7 7 i a 8. The cor'nbination; with a rail, of a metal wear member of material length, having a portion in wedging fit between the head and flange of the rail with a deep channel or groove longitudinally of the same and intermediate the engaging surfaces of said wearmember and means forv confining said 'f' Wear member in place.

9. A Wear-metal members of material len 'th having a portion fitting between the head and flange of a rail; saidmember being deeply grooved longitudinally of the same to permit expansion or compressionofsaid 7' portion to effect a Wedgmg fit With the head and flange of said rail. v 10. A Wear-metal member of material length of symmetrical cross sectional contour having portionsffitting between the .3

heads and flanges of a pair of rails; said member being deeply grooved longitudinally of the same in each portion to permit expansion or compressionofsaid portions to effect a wedging; fit withthe heads and flanges ofsaid rails. 7 a

11. A Wear-metal inem'ber of material length havinga portion for wedging engagement between the head and flange of a rail; said member being deeply grooved" longitudinally of the same intermediate the engaging faces of said portion to permit expansion or compression thereof toeffect an accurate wedging fit Vlth the head and 12. A Wear-metal memberof symmetrical cross sectionalcontour" having portions for Wedging engagement between the head and flange of a rail; said member being longitudinally grooved on opposite sides intermediate the; engaging faces of said portions to permit expansion or compressionthereof to eifect an accurate wedgi'ng lit with-the head and flange of'saidrail.

In witness whereof specification. V

GEORGE WV. lVl-IITEMAN. RUSSELL G. PAXSON. s

we have signed this I 

